Publisher: Marvel Comics Publication Date: January 1984 Series: A four-issue limited series Creators: Written by Chris Claremont and Bill Mantlo, with art by Butch Guice and Bob Wiacek Main Characters: Features the X-Men (including Wolverine, Colossus, Storm, Nightcrawler, and Kitty Pryde/Shadowcat), the New Mutants, the Micronauts (Arcturus Rann, Marionette, Bug, Acroyear, etc.), and the villain Baron Karza. Synopsis: The two teams of heroes unite to face a powerful, planet-destroying entity from the Microverse, a threat so great it forces the Micronauts to ally with their nemesis, Baron Karza.